Painting device with a manual suction cylinder

ABSTRACT

A painting device with a manual suction cylinder is provided with a connecting cavity or a connecting cylinder at each of its guiding pipe, brush heads and handle, with the connecting cylinder and the connecting cavity, the guiding pipe, the handle and the brush head are allowed to be assembled and disassembled quickly and easily, and a single handle of the present invention can be used to easily connect different types of brush heads without having the conventional problem that the conventional brush heads must have its own handle.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a painting device with a manual suctioncylinder, and more particularly to improvements on the handle, guidingpipe and brush head of a painting device with a manual suction cylinder.

2. Description of the Prior Art

Referring to FIG. 1, a conventional painting device with a manualsuction cylinder 10 comprises a pipe 11 and a plurality brushes 12. Asshown in FIG. 2, the manual suction cylinder 10 comprises a suction head13 and a container 14. The suction head 13 includes an operation rod131, a piston 132, a spring 133, a check valve 134 and a suction tube135. The suction tube 135 is disposed in the container 14 which isprovided for storage of paint. Pressing of the operation rod 131 causesreciprocation of the piston 132, and thus the paint is sucked by thesuction tube 135 to the suction head 13 and discharged from a nozzle136. The check valve 134 prevents the backflow of the paint sucked bythe piston 132. The nozzle 136 is connected to one end of the pipe 11,and the other end of the pipe 11 is connected to the brushes 12 whichcan be in any arbitrary forms, such as the roller brush 121, flat brush122, narrow brush 123 and wide brush 124, as shown in FIG. 1.

Referring then to FIG. 3, inside the brushes 12 there is a paint passage125 through which the paint is sucked from the end of the handle 126 anddischarged from a head 127 of the brushes 12.

It is to be noted that the connection of the brushes 12 to the pipe 11is such that the pipe 11 is directly inserted onto the end of thebrushes 12. In real application, the pipe 11 is very likely to becomeloose and disengage from the brushes after several times of assembly anddisassembly. Moreover, the brushes 12 are relatively expensive anddifficult to produce since each brush 12 has its own handle.

The present invention has arisen to mitigate and/or obviate theafore-described disadvantages.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide improvementson the handle, guiding pipe and brush head of a painting device with amanual suction cylinder, wherein a single handle of the presentinvention can be used to easily connect different types of brush headswithout having the conventional problem that the conventional brushheads must have its own handle.

To achieve the above object, a painting device with a manual suctioncylinder in accordance with the present invention comprises a guidingpipe, a handle, and at least one brush head, the manual suction cylinderincluding a suction head and a container. The suction cylinder isprovided with a suction tube and a check valve, the suction tube isdisposed in the container, the container is provided for storage ofpaint, pressing of the suction head causes the paint to be sucked fromthe container and discharged from a nozzle which is located at one endof the suction head. The guiding pipe includes a first end and a secondend, and the first end is connected to the nozzle of the suction head,the handle includes a feeding end and a discharge end which areconnected together by a passage, the brush head includes a connectingend connected to an interior of the brush head by a passage, and thebrush head is connected to the discharge end of the handle via aconnecting end, so that the paint is sucked from the manual suctioncylinder to the brush head via the guiding pipe and the handle. Thepainting device is characterized in that:

a hollow connecting cylinder formed with two opposite protrusions on itsouter surface; a connecting cavity, inside the connecting cavity areformed two opposite engaging grooves, and at one side of the engaginggrooves is formed a positioning groove; when the connecting cylinder isinserted in the connecting cavity, the protrusions are firstly engagedin the engaging grooves and then rotate together with the connectingcylinder within the connecting cavity by a certain distance and finallyslide into a locked positioned in the positioning groove, rotating theconnecting cylinder and the connecting cavity in opposite directions canmake the protrusions slide out of the positioning grooves, so that theconnecting cylinder is allowed to be disengaged from the connectingcavity; the hollow connecting cylinder and the connecting cavity areformed at the connecting end of the brush head, the second end of theguiding pipe and the discharge end of the handle; with the connectingcylinder and the connecting cavity, the guiding pipe, the handle and thebrush head are allowed to be assembled and disassembled.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an illustrative view of a conventional painting device;

FIG. 2 is a cross sectional view of a manual suction cylinder of theconventional painting device;

FIG. 3 is a partial cross sectional view of a conventional paintingdevice;

FIG. 4 is a perspective view of a painting device in accordance with thepresent invention;

FIG. 5 is a perspective view of a handle of the painting device inaccordance with the present invention;

FIG. 6 is a cross sectional view of the present invention showing theconnecting cylinder of the handle is inserted in the connecting cavityof the guiding pipe in an unlocked manner;

FIG. 7 is a cross sectional view of the present invention showing theconnecting cylinder of the handle is inserted in the connecting cavityof the guiding pipe in a locked manner;

FIG. 8 is an illustrative view of the painting device in accordance withthe present invention;

FIG. 9 is a partial cross sectional view of the painting device inaccordance with the present invention;

FIG. 10 is a partial exploded view of the painting device in accordancewith the present invention showing that the single handle can be appliedto different types of brush heads; and

FIG. 11 shows that the connecting cylinders and the connecting cavitiesof FIG. 10 change in positions.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will be clearer from the following descriptionwhen viewed together with the accompanying drawings, which show, forpurpose of illustrations only, the preferred embodiment in accordancewith the present invention.

Referring to FIGS. 4-9, a painting device with a manual suction cylinderin accordance with the present invention is shown and comprises: amanual suction cylinder 20, a guiding pipe 30, a handle 40, and a brushhead 50.

The manual suction cylinder 20 comprises a suction head 21 and acontainer 22. Like the conventional structure, the suction head 21 ofthe present invention is also provided with a check valve and a suctiontube (not shown). The container 22 is provided for storage of paint, andthe pressing of the suction head 21 causes the paint to be sucked fromthe container 22 and discharged from a nozzle 211 which is located atone end of the suction head 21.

The guiding pipe 30 includes a first end 31 and a second end 32, and thefirst end 31 connected to the nozzle 211 of the suction head 21.

The handle 40 includes a feeding end 51 and a discharge end 42 which areconnected by a passage 43.

The brush head 50 includes a connecting end 51 which is connected to theinterior of the brush head 50 by a passage 52, and the brush head 50 isconnected to the discharge end 42 of the handle 40 via the connectingend 51, so that the paint is sucked from the manual suction cylinder 20to the brush head 50 via the guiding pipe 30 and the handle 40, as shownin FIG. 9.

The characteristics of the present invention are described as follows:

Firstly, the connecting end 51 of the brush head 50 and the feeding end41 of the handle 40 are each specially provided with a connectingcylinder 60 the outer surface which are formed with two oppositeprotrusions 61, and the connecting cylinder 60 is hollow inside.

Secondly, the second end 32 of the guiding pipe 30 and the discharge end42 of the handle 40 are each formed with a connecting cavity 70, insidethe connecting cavity 70 are formed two opposite engaging grooves 71,and at one side of the engaging grooves 71 is formed a positioninggroove 72. If the connecting cylinder 60 is inserted in the connectingcavity 70, the protrusions 61 are firstly engaged in the engaginggrooves 71 (as shown in FIG. 6), and then rotate together with theconnecting cylinder 60 within the connecting cavity 70 by a certaindistance and finally slide into the positioning groove 72 and lockedtherein (as shown in FIG. 7). At this moment, rotating the connectingcylinder 60 and the connecting cavity 70 in opposite directions can makethe protrusions 61 slide out of the positioning grooves 72 (FIG. 6 showsthat the protrusions 61 slides back into the positioning grooves 72), sothat the connecting cylinder 60 is allowed to be disengaged from theconnecting cavity 70, in other words, the connecting cylinder 60 can beselectively engaged into and disengaged from the connecting cavity 70.

For a better understanding of the operation of the present invention,reference should be made to the following description.

Referring to FIGS. 4 and 8, the assembly of the present invention iscarried out by connecting the first end 31 of the guiding pipe 30 to thenozzle 211 of the suction head 21, and then connecting the connectingcylinder 60 formed at the feeding end 41 of the handle 40 to theconnecting cavity 70 formed at the second end 32 of the guiding pipe 30,and finally connecting the connecting cylinder 60 formed at theconnecting end 51 of the brush head 50 to the connecting cavity 70 atthe discharge end 42 of the handle 40. By doing so, the assembly of thepresent invention is finished, and the painting device is ready forpainting.

Referring then to FIG. 9, after the assembly is finished, the paint canbe discharged from the nozzle 211, then flows to the handle 40 via theguiding pipe 30, and finally flows to the passage 52 of the brush head50 via the passage 43 of the handle 40, and thus painting can be carriedout.

It is to be noted that it needs to use different brushes duringpainting, the handle 40 of the present invention is specially designedto have a connecting cavity 70, while the roller brush 53, flat brush54, narrow brush 55 and wide brush 56 are all provided with a connectingcylinder 60, so that the handle 40 of the present invention can beeasily connected to different types of brushes.

On top of that, the design of the structures of the connecting cavity 70and the connecting cylinder 60 can change according to actualrequirements. As shown in FIG. 11, for example, a second end 32A of theguiding pipe 30A and a discharge end 42A of a handle 40A are eachprovided with a connecting cylinder 60, while a feeding end 41A of thehandle 40A and a connecting end 51A of the brush heads 50A are eachprovided with a connecting cavity 70.

With the abovementioned designs, a single handle of the presentinvention can be used to connect different types of brush heads withouthaving the conventional problem that the conventional brush heads musthave its own handle.

While we have shown and described various embodiments in accordance withthe present invention, it is clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

1. A painting device with a manual suction cylinder comprising a guidingpipe, a handle, and at least one brush head, the manual suction cylinderincluding a suction head and a container, the container being providedfor storage of paint, pressing of the suction head causing the paint tobe sucked from the container and discharged from a nozzle which islocated at one end of the suction head, the guiding pipe including afirst end and a second end, and the first end being connected to thenozzle of the suction head, the handle including a feeding end and adischarge end which are connected together by a passage, the brush headincluding a connecting end connected to an interior of the brush head bya passage, and the brush head being connected to the discharge end ofthe handle via a connecting end, so that the paint is sucked from themanual suction cylinder to the brush head via the guiding pipe and thehandle; the painting device characterized in that: a hollow connectingcylinder formed with two opposite protrusions on its outer surface; aconnecting cavity, inside the connecting cavity are formed two oppositeengaging grooves, and at one side of the engaging grooves is formed apositioning groove; when the connecting cylinder is inserted in theconnecting cavity, the protrusions are firstly engaged in the engaginggrooves and then rotate together with the connecting cylinder within theconnecting cavity by a certain distance and finally slide into a lockedpositioned in the positioning groove, rotating the connecting cylinderand the connecting cavity in opposite directions can make theprotrusions slide out of the positioning grooves, so that the connectingcylinder is allowed to be disengaged from the connecting cavity; thehollow connecting cylinder and the connecting cavity are formed at theconnecting end of the brush head, the second end of the guiding pipe andthe discharge end of the handle; with the connecting cylinder and theconnecting cavity, the guiding pipe, the handle and the brush head areallowed to be assembled and disassembled.